Viessmann VITOTRONIC 300-K Manuel d'installation télécharger pdf (Page 41)

4. Scan actual temperature of the rele-

vant sensor.

Adjusting the heating curve

The heating curves illustrate the relation-

ship between the outside temperature

and the boiler water or flow tempera-

ture.

To put it simply: The lower the outside

temperature, the higher the boiler water

or flow temperature.

The room temperature, in turn, depends

on the boiler water or flow temperature.

Settings in the delivered condition:

■ Slope = 1.4

■ Level = 0

Note

If the heating system includes heating

circuits with mixers, then the flow tem-

perature of the heating circuit without

mixer is higher by a selected differential

(8 K in the delivered condition) than the

flow temperature of the heating circuits

with mixers.

The differential temperature is adjusta-

ble via coding address "9F" in the "Gen-

eral" group.

0.2

Outside temperature in °C

Boiler water or

Flow temperature in °C

Slope

2.4

2.6

2.8

3.0

3.2

3.4

0 -5 -10 -15 -20510

2.0

2.2

Set room temperature in °C

0.4

0.6

0.8

1.0

1.2

1.4

-30-25

1.8

1.6

Commissioning

Testing actuators and sensors on the Vitotronic…

(cont.)

5601 090 GB

Service

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Viessmann VITOTRONIC 300-K Manuel d'installation Page 41

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